Black Opal Meaning, History, Healing Properties, Advantages and Zodiac Association Black Opal Meaning stands separated from other opal assortments because of its dim body tone, which fills in as a background for energetic glimmers of variety to arise. This gemstone holds a high incentive for its special play of variety and extraordinariness. It begins with a type of hazy opal called potch opal, recognized by its profound body tone. When a potch opal shows a radiant play of variety, it procures the assignment of Black opal.